"Michigan, Marriages, 1868-1925," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/NQW7-QP2 : accessed 7 February 2015), Marten Rypma and Renske Keizer Tolsma, 04 Dec 1889; citing Jamestown, Ottawa, Michigan, v 3 p 119 3/4 rn 250, Department of Vital Records, Lansing; FHL microfilm 2,342,486.